_ [debian] virtualbox 5.2.4-dfsg-2 変？

なんか動かないなと思ったらモジュールがビルドできてなかった。

DKMS make.log for virtualbox-5.2.4 for kernel 4.14.0-3-amd64 (x86_64)
Tue Jan  9 12:41:55 JST 2018
make: Entering directory '/usr/src/linux-headers-4.14.0-3-amd64'
/usr/src/linux-headers-4.14.0-3-common/Makefile:947: *** "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel".  Stop.
Makefile:146: recipe for target 'sub-make' failed
make[1]: *** [sub-make] Error 2
Makefile:8: recipe for target 'all' failed
make: *** [all] Error 2
make: Leaving directory '/usr/src/linux-headers-4.14.0-3-amd64'

libelf-dev をインストールして解消。